
The MacIver brothers (Michael Redgrave, Griffith Jones) build the first ship to cross the Atlantic by steam power alone.
Cast

Michael Redgrave
Charles MacIver

Valerie Hobson
Mary Ann Morison

Griffith Jones
David MacIver

Hartley Power
Samuel 'Sam' Cunard

Margaretta Scott
Susan Donaldson

Bessie Love
Begonia Baggot

Milton Rosmer
George Burns

Frederick Leister
James Morison

Henry Oscar
Josiah Eagles

Edmund Willard
Robert Napier

Charles Victor
Tim Grogan
Frank Tickle
Mr. Donaldson

Leslie Bradley
Horatio Stubbs

Felix Aylmer
Bank President

Joss Ambler
Dr. Lardner

Ian McLean
Capt. Woodruff
Joe Cunningham
Capt. Slade

John Salew
Henry
Hélène Burls
Minor Role (uncredited)
Arthur Goullet
Minor role (uncredited)

James Harcourt
Minor role (uncredited)
Roddy Hughes
Minor role (uncredited)
Harry Lane
Minor role (uncredited)
Jean Lester
Minor role (uncredited)

Aubrey Mallalieu
Minor role (uncredited)

Princess Margaret
Princess Margaret (archive footage)

Elizabeth II of the United Kingdom
Princess Elizabeth (archive footage)

Queen Elizabeth the Queen Mother
The Queen Mother (archive footage)

Ian Wilson
Extra (uncredited)
Crew

Walter Forde
Director
Gordon Wellesley
Screenplay
Edward Dryhurst
Screenplay

Emeric Pressburger
Screenplay
Derek MacIver
Story
Wynne MacIver
Story

Terence Fisher
Editor
Basil Emmott
Director of Photography
Ernest A. Royls
Sound
Henry Harris
Special Effects
Douglas Woolsey
Special Effects
Jack Beaver
Music Director
Norman G. Arnold
Art Direction
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